1 //===-- WasmDump.cpp - wasm-specific dumper ---------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// This file implements the wasm-specific dumper for llvm-objdump.
13 //===----------------------------------------------------------------------===//
15 #include "llvm-objdump.h"
16 #include "llvm/Object/Wasm.h"
19 using namespace object;
21 void llvm::printWasmFileHeader(const object::ObjectFile *Obj) {
22 const WasmObjectFile *File = dyn_cast<const WasmObjectFile>(Obj);
24 outs() << "Program Header:\n";
25 outs() << "Version: 0x";
26 outs().write_hex(File->getHeader().Version);
31 llvm::getWasmRelocationValueString(const WasmObjectFile *Obj,
32 const RelocationRef &RelRef,
33 SmallVectorImpl<char> &Result) {
34 const wasm::WasmRelocation &Rel = Obj->getWasmRelocation(RelRef);
35 symbol_iterator SI = RelRef.getSymbol();
37 raw_string_ostream Fmt(FmtBuf);
38 if (SI == Obj->symbol_end()) {
39 // Not all wasm relocations have symbols associated with them.
40 // In particular R_WEBASSEMBLY_TYPE_INDEX_LEB.
43 Expected<StringRef> SymNameOrErr = SI->getName();
45 return errorToErrorCode(SymNameOrErr.takeError());
46 StringRef SymName = *SymNameOrErr;
47 Result.append(SymName.begin(), SymName.end());
49 Fmt << (Rel.Addend < 0 ? "" : "+") << Rel.Addend;
51 Result.append(FmtBuf.begin(), FmtBuf.end());
52 return std::error_code();